20 parameter dc input voltage dc output current power dissipation junction temperature ambient operating temperature storage temperature thermal resistance (junction to case) thermal resistance (junction to ambient air) unit v a w w c c c c/w c/w n features ? compact full-mold package (equivalent to to220) ? output current: 1.5a ? low dropout voltage: v dif 1v (at i o =1.5a) ? built-in foldback overcurrent, overvoltage, thermal protection circuits n applications ? for stabilization of the secondary stage of switching power supplies ? electronic equipment n absolute maximum ratings (t a =25 c) si-3001n series 3-terminal, full-mold, low dropout voltage dropper type l si-3001n series symbol v in i o p d1 p d2 t j t op t stg r th(j-c) r th(j-a) ratings si-3051n/3091n si-3121n/3151n si-3241n 35 35 45 1.5 *2 18(with infinite heatsink) 1.5(without heatsink, stand-alone operation) C40 to +125 C30 to +100 C40 to +125 5.5 66.7(without heatsink, stand-alone operation)
21 n electrical characteristics unit v v v mv mv mv/ c db ma a *1: "a" may be indicated to the right of the sanken logo. *2: v in(max) and i o(max) are restricted by the relation p d(max) =(v in -v o )?i o =18(w). *3: refer to the dropout voltage.(refer to setting dc input voltage on page 7.) *4: i s 1 is specified at C5(%) drop point of output voltage v o on the condition that v in =v o +3v, i o =1a. *5: a foldback type overcurrent protection circuit is built into the ic regulator. therefore, avoid using it for the following a pplications as it may cause starting errors: (1) constant current load (2) plus/minus power (3) series power (4) v o adjustment by raising ground voltage n outline drawing a. part number b. lot number q gnd w v o e v in 0.95 0.15 0.85 +0.2 10 0.2 4.2 0.2 2.8 0.2 2.6 0.15 qwe 3.2 0.2 2 max. 0.5 16.9 0.3 7.9 0.2 4 0.2 (13.5) 0.45 +0.2 ?.1 p3.4 0.1 2=6.8 ?.1 f a b plastic mold package type flammability: ul94v-0 weight: approx. 2.3g l si-3001n series symbol v in v o conditions v dif conditions conditions d v oline conditions d v oload conditions d v o / d t a conditions r rej conditions i q conditions i s1 conditions (unit:mm) ratings si-3051n SI-3091N si-3121n si-3151n si-3241n min. typ. max. min. typ. max. min. typ. max. min. typ. max. min. typ. max. 6 *3 30 *2 10 *3 30 *2 13 *3 30 *2 16 *3 30 *2 25 *3 40 *2 4.80 5.00 5.20 8.64 9.00 9.36 11.52 12.00 12.48 14.40 15.00 15.60 23.04 24.00 24.96 4.90 5.00 5.10 8.82 9.00 9.18 11.76 12.00 12.24 14.70 15.00 15.30 23.52 24.00 24.48 v in =8v, i o =1.0a v in =12v, i o =1.0a v in =15v, i o =1.0a v in =18v, i o =1.0a v in =27v, i o =1.0a 0.5 0.5 0.5 0.5 0.5 i o 1.0a 1.0 1.0 1.0 1.0 1.0 i o 1.5a 10 30 18 48 24 64 30 90 48 128 v in =6v to 15v, i o =1.0a v in =10v to 20v, i o =1.0a v in =13v to 25v, i o =1.0a v in =16v to 27v, i o =1.0a v in =25v to 38v, i o =1.0a 40 100 70 180 93 240 120 300 120 300 v in =8v, i o =0 to 1.5a v in =12v, i o =0 to 1.5a v in =15v, i o =0 to 1.5a v in =18v, i o =0 to 1.5a v in =27v, i o =0 to 1.5a 0.5 1.0 1.5 1.5 2.5 v in =8v, i o =5ma,t j =0 to 100 cv in =12v, i o =5ma,t j =0 to 100 cv in =15v, i o =5ma,t j =0 to 100 cv in =18v, i o =5ma,t j =0 to 100 cv in =27v, i o =5ma,t j =0 to 100 c 54 54 54 54 54 v in =8v, f=100 to 120h z v in =12v, f=100 to 120h z v in =15v, f=100 to 120h z v in =18v, f=100 to 120h z v in =27v, f=100 to 120h z 510 510 510 510 510 v in =8v, i o =0a v in =12v, i o =0a v in =15v, i o =0a v in =18v, i o =0a v in =27v, i o =0a 1.6 1.6 1.6 1.6 1.6 v in =8v v in =12v v in =15v v in =18v v in =27v (t a =25 c unless otherwise specified) parameter input voltage output voltage dropout voltage line regulation load regulation temperature coefficient of output voltage ripple rejection quiescent circuit current overcurrent protection startingcurrent *4,5 si-3001n *1 si-3001na
22 n block diagram n standard external circuit 3 reg. protection amp. v ref drive mic 1 2 t r1 d 1 c 0 c 2 c 1 dc input v in dc output v o 32 1 si-3001n * 1 * 2 ++ n t a -p d characteristics p d =i o ?[v in (mean)Cv o ] c 0 : output capacitor (47 to 100 m f) *1 c 1 : oscillation prevention capacitor (c 1 : approx. 47 m f, c 2 c 2 : 0.33 m f) these capacitors are required if the input line is inductive and in the case of long wiring. tantalum capacitors are recommended for c 1 and c 0 , particularly at low tempera- tures. *2 d 1 : protection diode this diode is required for protection against reverse bias- ing of the input and output. sanken eu2z is recommended. l si-3001n series 15 20 10 5 0 ?0 0 25 50 ambient temperature t a ( c) power dissipation p d (w) 75 100 75 75 2mm (7.6 c/w) 100 100 2mm (5.2 c/w) 200 200 2mm (2.3 c/w) infinite heatsink without heatsink with silicon grease heatsink:aluminum
23 n typical characteristics i o vs. v dif characteristics temperature coefficient of output voltage(si-3051n) circuit current(si-3051n) rise characteristics(si-3051n) rise characteristics(si-3121n) rise characteristics(si-3241n) overcurrent protection characteristics(si-3051n) overcurrent protection characteristics(si-3121n) overcurrent protection characte ristics(si-3241n) thermal protection characteristics(si-3051n) ambient temperature t a ( c) output voltage v o (v) 5.08 5.06 5.04 5.02 5.00 4.98 4.96 ?0 ?0 0 20 40 60 80 100 120 140 v in =8v i o =0a v o =5v ground current i g (ma) 01 46 input voltage v in (v) 810 50 40 30 20 10 0 v o =5v i o =1.5a 1.0a 0.5a 0a output voltage v o (v) 01234 input voltage v in (v) 57 6 7 6 5 4 3 2 1 0 1a 0.5a i o =0a 1.5a input voltage v in (v) output voltage v o (v) 14 12 10 8 6 4 2 0 02468101214 18 16 i o =0a 0.5a 1a 1.5a input voltage v in (v) output voltage v o (v) 30 25 20 15 10 5 0 010203040 i o =0a 0.5a 1a 1.5a output current i o (a) output voltage v o (v) 6 5 4 3 2 1 0 0 1.0 2.0 3.0 4.0 8v 15v 6v v in =30v output current i o (a) output voltage v o (v) 14 12 10 8 6 4 2 0 0 1.0 2.0 3.0 4.0 v in =30v 13v 15v 25v 20v output current i o (a) output voltage v o (v) 25 20 15 10 5 0 0 1.0 2.0 3.0 4.0 v in =40v 30v 35v 25v 27v note on thermal protection: the thermal protection circuit is intended for pro- tection against heat during instantaneous short- circuiting. its operation is not guaranteed for short- circuiting over extended periods of time. (t a =25 c) l si-3001n series 0.8 0.6 0.4 0.2 0 0 0.5 1.0 1.5 output current i o (a) dropout voltage v dif (v) case temperature t c ( c) output voltage v o (v) 6 5 4 3 2 1 0 20 60 100 140 180 v in =8v i o =10ma
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